Reproductive output and ultrasonography of an endangered population of East Pacific green turtles

被引：27

作者：

Blanco, Gabriela S. ^{[1
]}

Morreale, Stephen J. ^{[2
]}

Velez, Elizabeth ^{[3
]}

Piedra, Rotney ^{[4
]}

Montes, Wilder M. ^{[5
]}

Paladino, Frank V. ^{[6
]}

Spotila, James R. ^{[1
]}

机构：

[1] Drexel Univ, Dept Biol, Philadelphia, PA 19104 USA

[2] Cornell Univ, Dept Nat Resources, Ithaca, NY 14853 USA

[3] Kelonian Conservat Soc, Heredia, Costa Rica

[4] Minist Ambiente Energia & Telecomunicac, San Jose, Costa Rica

[5] Goldring Marine Biol Stn, Playa Grande, Guanacaste, Costa Rica

[6] Indiana Univ Purdue Univ, Dept Biol, Ft Wayne, IN 46805 USA

来源：

JOURNAL OF WILDLIFE MANAGEMENT | 2012年 / 76卷 / 04期

关键词：

Chelonia mydas; Costa Rica; East Pacific green turtle; Guanacaste; reproductive output; ultrasound; LOGGERHEAD SEA-TURTLES; CARETTA; FREQUENCY; ECOLOGY; STORAGE; EGGS;

D O I：

10.1002/jwmg.304

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Reproductive output is one of the most relevant aspects of life history. We analyzed the reproductive output of the endangered East Pacific green turtle (Chelonia mydas) nesting in Nombre de Jesus, Costa Rica. We supplemented beach patrols with ultrasonography to estimate clutch frequency. With ultrasound scans, we classified the stage of turtle ovaries as: early stage (2 or more clutches), late stage (1 clutch), and depleted ovaries (no clutches). We calculated mean (+/- SD) estimated clutch frequency (ECF) to be 3.7 +/- 1.8 (n?=?24) and an adjusted frequency considering individual stage (ECFU; ECF?+?number of clutches remaining as observed in the last ultrasound) as 5.1 +/- 1.3. This is greater than previously described for East Pacific green turtles. Greater individual output could be representative of a healthier population; but could also indicate a decrease in the estimate population numbers previously reported. (C) 2011 The Wildlife Society.

引用

页码：841 / 846

页数：6

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